Leonardo DiCaprio devotes his acceptance speech for the Oscar he finally won after all these years to global warming, and people flip out. How courageous. How thoughtful. What a smart and conscientious guy. “You have to listen when Leonardo DiCaprio speaks out,” said one breathless Facebook post.

No, you do not. You don’t have to listen to him blather on about global warming any more than you have to taker Hugo Chavez’ side because Sean Penn thinks he’s helping the little guy and not, as every sensible person on Earth seemed to recognize, looting the country.